液体在毛细微孔中接触角测量方法

建立了液体在毛细微孔中接触角的测量方法。主要介绍了微孔式接触角测量仪的组成、测量方法及数据处理方法。二次蒸馏水与正十四烷烃在石英毛细管中接触角的测量结果表明该仪器测量数据的重复性好、稳定性高。根据测量结果,讨论了液体在毛细管中接触角随着毛细管径的变化规律,接触角随着毛细管管径的减小而增大。

Method of measuring contact angle of liquid in capillary

A method of measuring contact angle with an instrument for measuring the contact angle of liquid in capillary was developed. The composition of the measuring instrument, measuring method and data processing method were introduced. The contact angle of double-distilled water with tetradecane in a quartz capillary was measured by the instrument. The relation between contact angle and the diameter of the capillary was studied, as well. The experiment results show that the measurement data is repeatable and accurate. For tetradecane /double-distilled water system the contact angle increases with decreasing of the quartz capillary diameter.